There are several reasons, actually:Article 16 of the National Association of Realtor's Code of Ethics and Standards of Practice prevents us from soliciting business from another realtor.

An ounce of prevention is worth a pound of cure?

You swap them out on a fairly regular basis either as preventative measure when they are nearing the end of their life, or as a restorative measure when they break.  

I want to make sure i follow protocol to prevent any trouble.

Both of those are Tenant responsibilities and can easily be cleaned and prevented. 

Are there a organized groups that seeks to prevent this?

There has to be some sort of huge obstacle preventing people from doing this that I am not seeing.Help educate a newbie Note/Lien learner by pointing out what I am missing.Thanks!

Actually getting it though is a different story.In our jurisdiction, an EM dispute does not prevent you from selling the property to someone and closing, your state may be different.What does your agent say?

Am I legally able to take a conditional nonrefundable deposit from a section 8 tenant to prevent her from renting some place else other then mine during/after her end part of section 8 paperwork processing stage (provided she will get the final approval by section 8 that is; she told me she has been a section 8 tenant for years and she’s just being transfer from one city to another; she verbally agreed that she‘ll rent my place)?

All deals must be screened for title issues prior to closing and either necessary and appropriate actions must be taken to clean the title or the deal must be scrapped because of unsolvable issues.A title issue, also called a cloud, is any recorded document or state of affairs that prevents the transaction from getting through the title policy underwriting process because of a potential claim to the property in opposition to the seller's.